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<li class="navelem"><a class="el" href="namespaceflow.html">flow</a></li><li class="navelem"><a class="el" href="namespaceflow_1_1perf.html">perf</a></li><li class="navelem"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a></li>  </ul>
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<a href="#pub-attribs">Public Attributes</a> &#124;
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  <div class="headertitle"><div class="title">flow::perf::Duration_set Struct Reference</div></div>
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<p>Convenience wrapper around an <code>array&lt;Duration, N&gt;</code>, which stores a duration for each of the N possible clock types in <a class="el" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0" title="Clock types supported by flow::perf module facilities, perf::Checkpointing_timer in particular.">perf::Clock_type</a>.  
 <a href="structflow_1_1perf_1_1Duration__set.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="clock__type__fwd_8hpp_source.html">clock_type_fwd.hpp</a>&gt;</code></p>
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Collaboration diagram for flow::perf::Duration_set:</div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pub-attribs" name="pub-attribs"></a>
Public Attributes</h2></td></tr>
<tr class="memitem:ae7d89b9e16f45dc59b27092e0496ce4f"><td class="memItemLeft" align="right" valign="top">std::array&lt; <a class="el" href="namespaceflow_1_1perf.html#a38e42ae0923eb23052e3a8a1e7956456">Duration</a>, size_t(<a class="el" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a6fba12db09e5bebfaa04f6372c41c2cf">Clock_type::S_END_SENTINEL</a>)&gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a></td></tr>
<tr class="memdesc:ae7d89b9e16f45dc59b27092e0496ce4f"><td class="mdescLeft">&#160;</td><td class="mdescRight">The underlying data, directly readable and writable by user. NOT ZERO-INITIALIZED ON CONSTRUCTION (or ever).  <a href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="related" name="related"></a>
Related Functions</h2></td></tr>
<tr><td class="ititle" colspan="2"><p >(Note that these are not member functions.) </p>
</td></tr>
<tr class="memitem:a4cff304aa30be9d5810f90101d32b761"><td class="memItemLeft" align="right" valign="top">std::ostream &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structflow_1_1perf_1_1Duration__set.html#a4cff304aa30be9d5810f90101d32b761">operator&lt;&lt;</a> (std::ostream &amp;os, const <a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;duration_set)</td></tr>
<tr class="memdesc:a4cff304aa30be9d5810f90101d32b761"><td class="mdescLeft">&#160;</td><td class="mdescRight">Prints string representation of the given <a class="el" href="structflow_1_1perf_1_1Duration__set.html" title="Convenience wrapper around an array&lt;Duration, N&gt;, which stores a duration for each of the N possible ...">Duration_set</a> value to the given <code>ostream</code>.  <a href="structflow_1_1perf_1_1Duration__set.html#a4cff304aa30be9d5810f90101d32b761">More...</a><br /></td></tr>
<tr class="separator:a4cff304aa30be9d5810f90101d32b761"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1c1e96770f8264d938ac09546a7cdb95"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structflow_1_1perf_1_1Duration__set.html#a1c1e96770f8264d938ac09546a7cdb95">operator+=</a> (<a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;target, const <a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;to_add)</td></tr>
<tr class="memdesc:a1c1e96770f8264d938ac09546a7cdb95"><td class="mdescLeft">&#160;</td><td class="mdescRight">Advances each <code>Duration</code> in the target <a class="el" href="structflow_1_1perf_1_1Duration__set.html" title="Convenience wrapper around an array&lt;Duration, N&gt;, which stores a duration for each of the N possible ...">Duration_set</a> by the given respective addend <code>Duration</code>s (negative Duration causes advancing backwards).  <a href="structflow_1_1perf_1_1Duration__set.html#a1c1e96770f8264d938ac09546a7cdb95">More...</a><br /></td></tr>
<tr class="separator:a1c1e96770f8264d938ac09546a7cdb95"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a129032bde1082e8f2681669acf6bf03d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structflow_1_1perf_1_1Duration__set.html#a129032bde1082e8f2681669acf6bf03d">operator*=</a> (<a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;target, uint64_t mult_scale)</td></tr>
<tr class="memdesc:a129032bde1082e8f2681669acf6bf03d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Scales each <code>Duration</code> in the target <a class="el" href="structflow_1_1perf_1_1Duration__set.html" title="Convenience wrapper around an array&lt;Duration, N&gt;, which stores a duration for each of the N possible ...">Duration_set</a> by the given numerical constant.  <a href="structflow_1_1perf_1_1Duration__set.html#a129032bde1082e8f2681669acf6bf03d">More...</a><br /></td></tr>
<tr class="separator:a129032bde1082e8f2681669acf6bf03d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aff603762f38b9e3e3d50b833e09c3f91"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structflow_1_1perf_1_1Duration__set.html#aff603762f38b9e3e3d50b833e09c3f91">operator/=</a> (<a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;target, uint64_t div_scale)</td></tr>
<tr class="memdesc:aff603762f38b9e3e3d50b833e09c3f91"><td class="mdescLeft">&#160;</td><td class="mdescRight">Divides each <code>Duration</code> in the target <a class="el" href="structflow_1_1perf_1_1Duration__set.html" title="Convenience wrapper around an array&lt;Duration, N&gt;, which stores a duration for each of the N possible ...">Duration_set</a> by the given numerical constant.  <a href="structflow_1_1perf_1_1Duration__set.html#aff603762f38b9e3e3d50b833e09c3f91">More...</a><br /></td></tr>
<tr class="separator:aff603762f38b9e3e3d50b833e09c3f91"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p >Convenience wrapper around an <code>array&lt;Duration, N&gt;</code>, which stores a duration for each of the N possible clock types in <a class="el" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0" title="Clock types supported by flow::perf module facilities, perf::Checkpointing_timer in particular.">perf::Clock_type</a>. </p>
<p >It is a completely tight wrapper, not even adding zeroing of the array values on construction. It only adds convenience operations (possibly as free functions), namely some common math (such as scaling all N values by some numeric factor) and stream I/O.</p>
<h3>Design rationale</h3>
<p >Performance is absolutely key, so this is to be identical to the underlying (and publicly accessible) <code>array</code> in terms of data storage and operations. I wrote this <code>struct</code> to avoid overloading things like <code>operator-(a, b)</code> and <code>operator&lt;&lt;(ostream&amp;, x)</code>, when the underlying type of <code>a</code>, <code>b,</code>x<code>is a standard</code>array`: we don't want to overload such operations on a general type, even if it's only in our namespace. Historically, the first cut simply made non-operator-overload free function versions of such things operating directly on the <code>array</code>s. </p>

<p class="definition">Definition at line <a class="el" href="clock__type__fwd_8hpp_source.html#l00185">185</a> of file <a class="el" href="clock__type__fwd_8hpp_source.html">clock_type_fwd.hpp</a>.</p>
</div><h2 class="groupheader">Friends And Related Function Documentation</h2>
<a id="a129032bde1082e8f2681669acf6bf03d" name="a129032bde1082e8f2681669acf6bf03d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a129032bde1082e8f2681669acf6bf03d">&#9670;&nbsp;</a></span>operator*=()</h2>

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          <td class="memname"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp; operator*= </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;&#160;</td>
          <td class="paramname"><em>target</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">uint64_t&#160;</td>
          <td class="paramname"><em>mult_scale</em>&#160;</td>
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<p>Scales each <code>Duration</code> in the target <a class="el" href="structflow_1_1perf_1_1Duration__set.html" title="Convenience wrapper around an array&lt;Duration, N&gt;, which stores a duration for each of the N possible ...">Duration_set</a> by the given numerical constant. </p>
<dl class="section note"><dt>Note</dt><dd>If you plan to use division as well, always first multiply, then divide, to avoid rounding errors (assuming overflow is not a possibility).</dd></dl>
<dl class="todo"><dt><b><a class="el" href="todo.html#_todo000145">Todo:</a></b></dt><dd>Maybe allow <code>operator*=(Duration_set)</code> by a potentially negative number; same for division.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">target</td><td>The set of <code>Duration</code>s each of which may be modified. </td></tr>
    <tr><td class="paramname">mult_scale</td><td>Constant by which to multiply each <code>target</code> <code>Duration</code>. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Reference to mutable <code>target</code> to enable standard <code>*=</code> semantics. </dd></dl>

<p class="definition">Definition at line <a class="el" href="clock__type_8cpp_source.html#l00058">58</a> of file <a class="el" href="clock__type_8cpp_source.html">clock_type.cpp</a>.</p>

<p class="reference">References <a class="el" href="clock__type__fwd_8hpp_source.html#l00188">m_values</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a1c1e96770f8264d938ac09546a7cdb95">&#9670;&nbsp;</a></span>operator+=()</h2>

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          <td class="memname"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp; operator+= </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;&#160;</td>
          <td class="paramname"><em>target</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;&#160;</td>
          <td class="paramname"><em>to_add</em>&#160;</td>
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          <td>)</td>
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<p>Advances each <code>Duration</code> in the target <a class="el" href="structflow_1_1perf_1_1Duration__set.html" title="Convenience wrapper around an array&lt;Duration, N&gt;, which stores a duration for each of the N possible ...">Duration_set</a> by the given respective addend <code>Duration</code>s (negative Duration causes advancing backwards). </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">target</td><td>The set of <code>Duration</code>s each of which may be modified. </td></tr>
    <tr><td class="paramname">to_add</td><td>The set of <code>Duration</code>s each of which is added to a <code>target</code> <code>Duration</code>. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Reference to mutable <code>target</code> to enable standard <code>+=</code> semantics. </dd></dl>

<p class="definition">Definition at line <a class="el" href="clock__type_8cpp_source.html#l00038">38</a> of file <a class="el" href="clock__type_8cpp_source.html">clock_type.cpp</a>.</p>

<p class="reference">References <a class="el" href="clock__type__fwd_8hpp_source.html#l00188">m_values</a>.</p>

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</div>
<a id="aff603762f38b9e3e3d50b833e09c3f91" name="aff603762f38b9e3e3d50b833e09c3f91"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aff603762f38b9e3e3d50b833e09c3f91">&#9670;&nbsp;</a></span>operator/=()</h2>

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          <td class="memname"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp; operator/= </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;&#160;</td>
          <td class="paramname"><em>target</em>, </td>
        </tr>
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          <td class="paramkey"></td>
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          <td class="paramtype">uint64_t&#160;</td>
          <td class="paramname"><em>div_scale</em>&#160;</td>
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<p>Divides each <code>Duration</code> in the target <a class="el" href="structflow_1_1perf_1_1Duration__set.html" title="Convenience wrapper around an array&lt;Duration, N&gt;, which stores a duration for each of the N possible ...">Duration_set</a> by the given numerical constant. </p>
<dl class="section note"><dt>Note</dt><dd>If you plan to user multiplication as well, always first multiply, then divide, to avoid rounding errors (and assuming overflow is not a possibility).</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">target</td><td>The set of <code>Duration</code>s each of which may be modified. </td></tr>
    <tr><td class="paramname">div_scale</td><td>Constant by which to divide each <code>target</code> <code>Duration</code>. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Reference to mutable <code>target</code> to enable standard <code>/=</code> semantics. </dd></dl>

<p class="definition">Definition at line <a class="el" href="clock__type_8cpp_source.html#l00068">68</a> of file <a class="el" href="clock__type_8cpp_source.html">clock_type.cpp</a>.</p>

<p class="reference">References <a class="el" href="clock__type__fwd_8hpp_source.html#l00188">m_values</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a4cff304aa30be9d5810f90101d32b761">&#9670;&nbsp;</a></span>operator&lt;&lt;()</h2>

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          <td class="paramname"><em>os</em>, </td>
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          <td class="paramtype">const <a class="el" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> &amp;&#160;</td>
          <td class="paramname"><em>duration_set</em>&#160;</td>
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<p>Prints string representation of the given <a class="el" href="structflow_1_1perf_1_1Duration__set.html" title="Convenience wrapper around an array&lt;Duration, N&gt;, which stores a duration for each of the N possible ...">Duration_set</a> value to the given <code>ostream</code>. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">os</td><td>Stream to which to write. </td></tr>
    <tr><td class="paramname">duration_set</td><td>Object to serialize. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><code>os</code>. </dd></dl>

<p class="definition">Definition at line <a class="el" href="clock__type_8cpp_source.html#l00093">93</a> of file <a class="el" href="clock__type_8cpp_source.html">clock_type.cpp</a>.</p>

<p class="reference">References <a class="el" href="clock__type__fwd_8hpp_source.html#l00188">m_values</a>, and <a class="el" href="util_2util_8hpp_source.html#l00367">flow::util::ostream_op_to_string()</a>.</p>
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<h2 class="groupheader">Member Data Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ae7d89b9e16f45dc59b27092e0496ce4f">&#9670;&nbsp;</a></span>m_values</h2>

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          <td class="memname">std::array&lt;<a class="el" href="namespaceflow_1_1perf.html#a38e42ae0923eb23052e3a8a1e7956456">Duration</a>, size_t(<a class="el" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a6fba12db09e5bebfaa04f6372c41c2cf">Clock_type::S_END_SENTINEL</a>)&gt; flow::perf::Duration_set::m_values</td>
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<p>The underlying data, directly readable and writable by user. NOT ZERO-INITIALIZED ON CONSTRUCTION (or ever). </p>

<p class="definition">Definition at line <a class="el" href="clock__type__fwd_8hpp_source.html#l00188">188</a> of file <a class="el" href="clock__type__fwd_8hpp_source.html">clock_type_fwd.hpp</a>.</p>

<p class="reference">Referenced by <a class="el" href="checkpt__timer_8cpp_source.html#l00372">flow::perf::Checkpointing_timer::Aggregator::create_aggregated_result()</a>, <a class="el" href="clock__type_8cpp_source.html#l00058">operator*=()</a>, <a class="el" href="clock__type_8cpp_source.html#l00038">operator+=()</a>, <a class="el" href="clock__type_8cpp_source.html#l00048">flow::perf::operator+=()</a>, <a class="el" href="clock__type_8cpp_source.html#l00026">flow::perf::Time_pt_set::operator-()</a>, <a class="el" href="clock__type_8cpp_source.html#l00068">operator/=()</a>, and <a class="el" href="clock__type_8cpp_source.html#l00093">operator&lt;&lt;()</a>.</p>

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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>perf/<a class="el" href="clock__type__fwd_8hpp_source.html">clock_type_fwd.hpp</a></li>
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